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<title>Step 8: Creating a Reverse Replication/Cascaded Replication SLA</title>
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<body style="clear:both; padding-left:10px; padding-top:5px; padding-right:5px; padding-bottom:5px"><a name="EN-US_TOPIC_0000002164819458"></a><a name="EN-US_TOPIC_0000002164819458"></a>

<h1 class="topictitle1">Step 8: Creating a Reverse Replication/Cascaded Replication SLA</h1>
<div><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p540441716217">If you need to configure reverse replication (replicating replication copies to the source end) or cascaded replication (replicating replication copies from the target end to another cluster), configure the replication policy SLA by referring to this section. Otherwise, skip this section.</p>
<div class="section" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_section44677417180"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_ol112221128161219"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li12267355142219"><span>Log in to the management page of the cluster where the replication copies reside.</span><p><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p16156520184414">You can view and perform operations on replication copies only on the target cluster.</p>
</p></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_li149381918143112"><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002199964685_uicontrol8111821122820"><b>Protection &gt; Protection Policies &gt; SLAs</b></span>.</span></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li1398744911327"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol16361195913920"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_text8361115916397"><strong>Create</strong></span></b></span>.</span></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_li632243103212"><span>Enter an SLA name.</span></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_li6674114017375"><span>Select an application type for the SLA to be created.</span><p><ol type="a" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_ol71011061385"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_li16667553151916">Click the <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_uicontrol16364345183319"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_text1149753619468"><strong>Applications</strong></span></b></span> icon.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_li874192611325">Choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_uicontrol111981759171912"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_text36181344182016"><strong>Specific to application</strong></span> &gt; Copies &gt; <span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_text884542312198"><strong>Replication Copy</strong></span></b></span>.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_li158271347172012">Click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001140003755_uicontrol95561152115"><b>OK</b></span>.</li></ol>
</p></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_li158166713135"><span>Click the <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol111335151290"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_text1466823185112"><strong>Replication Policy</strong></span></b></span> icon.</span></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_li3425152010144"><span>Configure replication policy information and click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol1823635215617"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p1540814915535">Click <span><img id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_image1413010131183" src="en-us_image_0000002187118396.png"></span> on the right of the page to create a maximum of four replication policies.</p>
<p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p10717113412144"><a href="#EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_table201991821175612">Table 1</a> describes the related parameters.</p>

<div class="tablenoborder"><a name="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_table201991821175612"></a><a name="en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_table201991821175612"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_table201991821175612" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Replication policy parameters</caption><colgroup><col style="width:20.29%"><col style="width:79.71000000000001%"></colgroup><thead align="left"><tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_row4200621205616"><th align="left" class="cellrowborder" valign="top" width="20.29%" id="mcps1.3.2.2.7.2.3.2.3.1.1"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p52001218563">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="79.71000000000001%" id="mcps1.3.2.2.7.2.3.2.3.1.2"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p13200152105617">Description</p>
</th>
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<tbody><tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row1114619522577"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p1314735219573">Data Type<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note87251558457"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000002164820434_en-us_topic_0000001839143213_p8320153562113">This parameter is available only in 1.6.0 and later versions.</p>
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<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p2075011198589">Type of the copy to be replicated. The value can be <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1740459173514">Data copy</strong> or <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b383241173513">Log copy</strong>.<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note296320467485"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul1522592194920"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li922516294913">The <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1947113387355">Log copy</strong> option is displayed only for the Oracle or SQL Server application.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li194651143509">Restoration using log copies depends on data copies. Therefore, create a data copy replication policy before creating a log copy replication policy. Otherwise, log replication copies cannot be used for restoration.</li></ul>
</div></div>
</div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_row22001321145619"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p1200182185611">Name</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p62001216563">Replication policy name, which can be customized.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row12962101682515"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p18375152112518">Replication Mode</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p560214353412">Only cross-domain replication, that is, replication between clusters, is supported.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_row1520042118562"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p52000216567">Replication Target Cluster</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p24782191605">Target cluster to which data is replicated.</p>
<div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p42001121155620">Select the target cluster, or click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_uicontrol28664506013"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_text193651191506"><strong>Add</strong></span></b></span> to add a new cluster.<ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_ul17266194210278"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li3998812219">If <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol641561815216"><b>Replication Target Cluster</b></span> is the source cluster of the replication copies, reverse replication is performed.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li1419217379216">If <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol149321939112110"><b>Replication Target Cluster</b></span> is another cluster, cascaded replication is performed.</li></ul>
</div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row9718193411581"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p8718193416581">Replication Target User</p>
<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_note1631923514210"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p8320153562113">This parameter is available only in 1.6.0 and later versions.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p16452223212">Select the system administrator or data protection administrator of the target end for replication.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row101471239195820"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p14147173935819">Password</p>
<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_note922661517424"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002164820502_p8320153562113">This parameter is available only in 1.6.0 and later versions.</p>
</div></div>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p047882152213">Enter the password of the system administrator or data protection administrator of the target end for replication. After entering the password, click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol171601242183913"><b>Authenticate</b></span> to verify the password.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row12166168185911"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p616617819594">Specify Target Location</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p193151327162214"><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ph6913192918373">A backup storage unit or backup storage unit group can be selected as the target location for replication. If a backup storage unit group is selected, the system will select a backup storage unit from the backup storage unit group as the target location for first replication of a backup copy and preferentially select the backup storage unit used for the first replication in subsequent replications.</span><div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note119618230211"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul19974205194214"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li117129544426">For version 1.5.0, this parameter is available only when <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b34101252204619">Replication Mode</strong> is set to <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol341015214615"><b>Intra-domain</b></span>.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li199748517429"><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ph17583270376">A backup storage unit that has been specified as the target location for a backup policy cannot be used as the target location for a replication policy.</span></li></ul>
</div></div>
</div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_row13200202185616"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p13200821105618">Interval</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p146961735470">Replication is performed every <em id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_i1558652719458">xx</em> minutes, hours, days, or weeks.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row159539565019"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p947373725610">Replication and Retention Rules</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p2954144931916">Select the replication copy that you need to replicate and set the retention period of the copy.</p>
<div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p74571017201913">Once the retention period expires, the system automatically deletes the expired copies. The retention period must be longer than the replication interval.<ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000001091370109_ul6461175912421"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li14284119318"><strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b427824295513">Replicate all copies</strong>: replicates copies generated since a specified time and set the copy retention period. The copy retention period can be as follows:<ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul8709174274820"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li16854124684810">1 to 25550 days</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li134729194920">1 to 3650 weeks</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li23071149174913">1 to 840 months</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li1685424684816">1 to 70 years</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li785454616488">Permanently</li></ul>
</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li169914211296"><strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b12601162203618">Replicate copies on the specified date</strong>: specifies the date and set the copy retention period. You can select multiple options at the same time:<ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul15411165794010"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li241110576407">Select the backup copies generated in a specified month of each year for replication. The replication copies are retained for <em id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_i15992114113313">x</em> years (the retention period can be 1 to 70 years).</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li156079239417">Select the first or last backup copy of each month for replication. The replication copies are retained for <em id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_i61481332483">x</em> months (the retention period can be 1 to 840 months).</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li7824743184118">Select the backup copies generated on a specified day of each week for replication. The replication copies are retained for <em id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_i19641849298">x</em> weeks (the retention period can be 1 to 3650 weeks).</li></ul>
<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note13295163217817"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul16634174815310"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li9869521530">You can select <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b66301113113715">Replicate copies on the specified date</strong> only for replication of full and forever incremental (synthetic full) backup copies on the specified date.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li1563410481331">If multiple options are selected, copies on any date specified by these options are replicated, and the obtained replication copies are retained for the longest period specified in these options.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li658617537551">If you choose to replicate the last full backup copy in a month for 1.6.0 and later versions, the job for replicating the to-be-replicated full backup copy in the current month will be executed in the next month.</li></ul>
</div></div>
</li></ul>
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</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row07931911102911"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p88157350575">First Run At</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p4137439103015">Start time of the first replication job.</p>
<div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p73878488501">If <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b97015588519">First Run At</strong> is later than the current time, data replication starts based on <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b27005818510">First Run At</strong>. If <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1371135810511">First Run At</strong> is earlier than the current time, data is replicated when the next replication period arrives.<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note3459142085219"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000001607531760_ul28273511414"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000001607531760_li58279510418">Ensure that the time of the host where the client is installed, local cluster, and target cluster is consistent.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000001607531760_li1362912714119">If Air Gap is planned, ensure that the first execution time is within the Air Gap replication time window of the target cluster and that the start time of each replication job is within the Air Gap replication time window. If a replication job does not end within the Air Gap replication time window and <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol1711211281400"><b>Forcibly Suspend Replication</b></span> is enabled for the Air Gap policy, the replication job will be forcibly terminated and fail immediately. To complete the replication job, disable <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol4563131464118"><b>Forcibly Suspend Replication</b></span> for the Air Gap policy of the target cluster.</li></ul>
</div></div>
</div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_row183501658195610"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_p8351358185612">Rate Limiting Policy</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001091370109_p7177174513150">Average maximum amount of data that can be transmitted per second in a replication job.</p>
<p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p208941559135816">Select the created rate limiting policy. For details about how to create a rate limiting policy, see <a href="en-us_topic_0000002164659686.html#EN-US_TOPIC_0000002164659686">Step 4: (Optional) Creating a Rate Limiting Policy</a>.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row668341472818"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p9684191492817">Link Deduplication<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note43214486811"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_p9322048780">For 1.5.0, the parameter name is <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b377803810376">Data Deduplication</strong>.</p>
</div></div>
</div>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p1168451482817">After this function is enabled, the system deduplicates data copies during remote replication to improve replication efficiency. You are advised to enable this function.<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note19674741123810"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul1096989193510"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li135803529411">Before enabling this function, ensure that target deduplication has been enabled.<ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul155108557412"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li96071722428">If <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1926415414156">Target Deduplication</strong> exists in the backup policy of the SLA, enable <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b359274191618">Target Deduplication</strong>. Otherwise, link deduplication does not take effect.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li18970109163510">If <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b65574174166">Target Deduplication</strong> does not exist in the backup policy of the SLA, target deduplication is enabled by default.</li></ul>
</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li14702922172818">This parameter is available only when <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b182109312148">Local Storage Type</strong> is set to <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1286654147">OceanProtect</strong>.</li></ul>
</div></div>
</div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row1552751710288"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p3527141782816">Link Compression<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note98175196112"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_p188181119191119">For 1.5.0, the parameter name is <strong id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_b1598295216372">Data Compression</strong>.</p>
</div></div>
</div>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p103611153215">After this function is enabled, the system compresses data copies during remote replication to improve replication efficiency. You are advised to enable this function.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row9805183081619"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><div class="p" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p659735891618">WORM Setting<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_note9935149115617"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_en-us_topic_0000002164660726_p18759163818421">This parameter is available only in 1.5.0.</p>
</div></div>
</div>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p956534010557">After this function is enabled, generated copies are WORM copies. WORM copies cannot be deleted, and their retention periods cannot be shortened.</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_row145141420122810"><td class="cellrowborder" valign="top" width="20.29%" headers="mcps1.3.2.2.7.2.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p113408251083">Job Failure Alarm</p>
</td>
<td class="cellrowborder" valign="top" width="79.71000000000001%" headers="mcps1.3.2.2.7.2.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_p7601371993">After this function is enabled, an alarm is automatically sent if a job fails and is automatically cleared after successful execution.</p>
</td>
</tr>
</tbody>
</table>
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</p></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_li14772135418213"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001092505481_uicontrol13919162932"><b>OK</b></span>.</span></li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li585617920201"><span>Associate the resource with a created SLA and perform reverse replication or cascaded replication on the replication copies.</span><p><ol type="a" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_ol886813284387"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000001090318017_li0198134611381">Choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol137744685812"><b><span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_text9893546125720"><strong>Explore</strong></span> &gt; <span id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_text74373665812"><strong>Copy Data</strong></span></b></span> and select the corresponding application type.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li133932163911">Locate the row that contains the resource for which reverse replication or cascaded replication will be performed, and choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol317419517404"><b>More &gt; Protect</b></span>.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li98161514402">Select a created SLA.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_li1223217327406">Click <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_uicontrol1495920164419"><b>OK</b></span>.<div class="note" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_note1465611242259"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ul12729526113420"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li11502190184711">When executing a replication job, ensure that the used capacity of storage pools on the local and target clusters does not exceed <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol134618370529"><b>Data Backup Capacity</b></span> specified in the license. Otherwise, the replication job fails. Perform the following steps to check whether the capacity is sufficient:<ol id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_ol14312567529"><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li118994632112">Log in to DeviceManager of the backup storage devices in the local and target clusters. For details, see <a href="en-us_topic_0000002164659666.html#EN-US_TOPIC_0000002164659666">Logging In to DeviceManager</a>.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li0708930155417">Choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol14133214551"><b>System &gt; Storage Pools</b></span> and view the used storage pool capacity.</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li13771152165511">Choose <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol1379134385710"><b>Setting &gt; License Management</b></span> and check <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol1740442155618"><b>Data Backup Capacity</b></span>.<p id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_p936183955611">The used storage pool capacity cannot exceed <span class="uicontrol" id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_uicontrol18711937192110"><b>Data Backup Capacity</b></span>.</p>
</li></ol>
</li><li id="EN-US_TOPIC_0000002164819458__en-us_topic_0000002164606322_en-us_topic_0000002164820502_en-us_topic_0000002200146989_li137291526173411">You cannot view the replication copies generated by replication jobs in the local cluster, but can only view them or use them for restoration in the target cluster.</li></ul>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0000002200060445.html">Replicating Dameng Database Copies (Applicable to the OceanProtect X Series Backup Appliances)</a></div>
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